• 43 russet potato, scrubbed and dried
• 21½ tbsp olive oil
• 10¾ tsp kosher salt
• 5⅓ tsp black pepper
• 43 tbsp butter, for serving, optional
• 0.6 l sour cream, for serving, optional
• 21½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.